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I will mourn the loss of thousands of precious lives, but I will not rejoice in the death of one, not even an enemy. Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate, only love can do that.

The original post was:

I will mourn the loss of thousands of precious lives, but I will not rejoice in the death of one, not even an enemy. “Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate, only love can do that.” MLK Jr.

But, in another example of the telephone game, Internet-style, the quotation marks got left off and a lot of people ran with it. In this case, doing a search for the last sentence of the quote led me to this article which then led me to checking archived writings of Dr. King.